Riveting-machine



UNiTED STATES PATENT OFFICE.

CHRISTIAN A. SKEIE, OF ST. HILAIRE, MINNESOTA.

RIVETING-NIACHINE.

SPECIFICATION forming part of Letters Patent No. 552,398, dated December31, 1895.

Application iiled May l1, 1895. Serial No. 548,952. (No model.) I

To all whomJ it may concern:

Be it known that I, CHRISTIAN A. SKEIE, o St. Hilaire, county of Polk,State of Minnesota, have invented certain new and useful Improvements inRiveting Machines, of which the following is a full, clear, and exactdescription.

This invention relates to machines for insertin g rivets in material andupsetting their ends. y

Idesign particularly to employ the machine in riveting together piecesof leather; but it is to be understood that the machine is adapted foruse in connection with other material.

The invention consists in a series of plungers or rods adapted topuncture the material, insert the rivet and washer, and upset or headthe end of the rivet-shank.

It further consists in the construction and novel arrangement of parts,as will hereinafter appear, and be more particularly pointed out in theappended claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure lis a side elevation of ariveting-machine embodying my inventionwith a portion of the frame or casing broken away. Fig. 2 is a frontelevation thereof. Fig. 3 is a sec-v tional elevation of a portion ofthe machine, and Fig. 4. is a sectional elevation of another portion ofthe machine.

Referring to the drawings, A designates a frame having a hollow bedportion a and a forwardly-projecting arm a. The frame is of suitablemetal and is designed to be secured to a bench or similar support.

A is a presser-plunger movable vertically in a vertical opening oropenings in the arm a. The plunger A is tubular and has movablevertically in it a washer-holding plunger A2, which is also tubular, toreceive a rivetin g-plunger A3. The upper end of the plunger A2 extendsabove the upper end of the plunger A', and the plunger A extends abovethe upper end of the plunger A2. AA spring-plate a2 attached to theframe A has its bifurcate end loosely surrounding the extended end ofthe plunger A3 and bearing upon the upper end of the plunger A2. Thisspring serves to force the plunger down upon a washer, as willhereinafter appear.

B is a lever pivoted on a pin Z) extended between lugs b projectedupward from the arm a. This lever B has a cam end h2 adapted to bearupon and force the riveting-plunger downward. A bifurcate lever B hasits arms fulcrumed on the pin b at opposite sides of the lever B, andthe rear end of this lever B is extended in the line of movement of thelever B, so that said lever B may be rocked in one direction by thelever B.

B2 is a washer-chiite communicating with an opening b2 in the lowerportion of the plunger A. This chute is extended rearward with a slightlateral inclination and is curved upward. The edges are turned upwardand inward to form guides for a pusher-plate B3. An opening b4 is formedin the top of the chute through which the washer may be placed in thechute, and a spring-finger h5 is employed to hold the washer in place inthe chute; but this iinger will yield sufficiently to allow a washer tobe forced from under it by the pusher.

The pusher B3 has a curve corresponding to the curve of the chute, andat its upper end it is pivotally connected to a lever B4, pivotedbetween its ends on a stud projected through a side opening in the arma', from the plunger A. The forward end of the lever B4 has a pivotedlink connection B5 with links b, which have pivotal connection with theforward end of the bifurcate lever B. From the pivot connecting thelinks B5 h6 abifurcate link 197 extends to a loose connection with theupper end of the plunger A2.

B6 is a lever having two parallel arms fulcrumed respectively on pinshaextended from the sides of the arm cd, and at their ends have IOOanvil C is rigidly connected to the link, and

extended through slots or openings c3 in the sides of the anvil. Springiingers or plates c extend over the top oi' the anvil C to close theupper end of the opening; but these iingers or plates may be pushedapart into recesses c7 in the portion c3 by the puncturing-tool when itis forced upward.

C2 is the puncturing-tool or awl movable in a vertical opening or holein the anvil. The lower end of the puncturing-tool is attached to ayoke-plate c4, the two arms of which have pivotal connection with thepivot c2. A coiled spring c5 is interposed between the upper end of theyoke c4 and the upper wall of an enlarged chamber in the lower portionof the anvil. Obviously, as the pivot c2 is movable in the slots c3,vertical motion may be im parted to the puncturin g-tool withoutimparting motion to the anvil when it is desired to puncture the leatheror other material to receive the shank of a rivet.

D is a yoke having its two arms extended through holes in the front wallof the hollow base a and movable longitudinally. Springs (l surround theinner ends of the yoke-arms, bearing at one end against the wall of thebase a and at the other end against a head on the arms, plainly shown inthe drawings.

A rivet-pusher iin ger D has its lower end rigidly secured to the yokeD, and its upper end extended through a slot opening in the bottom of arivet-tray D2, extended forward from the upper portion of the tubularportion a3.

The tray communicates with the interior of the tubular portion a3through an inverted-T- shaped opening d in the front wall of t-he saidtubular portion. It will be understood that the head of the rivet passesthrough the horizontal opening' and the shank through the verticalportion of said opening.

An angle or cam lever D3 has pivotal connection with the yoke D, and itsangle portion (Z2 is designed to contact with the casing A, as clearlyshown in the drawings.

A stop-pin D4 is mounted on the pusherfinger D', and its free endprojects through a vertical slot in the casing or frame A and is adaptedto enter between the upper end of the link c and the inner face ot' theyoke-plate cl or to bear against shoulders cl3 of the bifurcate end ofthe anvil, as shown in dotted line in Fig. l. The stop-pin has a looseconnection with the iinger D', so that it may move longitudinallythereof.

A spring (Z4, affixed at one end to the frame A and at its other coiledend to the rock-arm C', serves to rock the forward end of the armdownward.

rlhe operation of the m achine is as :follows: First press the lever D3downward, as indicated in full lines in the drawings, which will placethe parts D D4 in the position shown in Fig. 3, then place the rivet inthe tray D, and then operate the foot-treadle to force the anvil C tothe position shown in Fig. 3. Now the plunger A is to be raised by meansof the lever B" and the work 'y placed in position and the plungerallowed to return to bear upon the work. By rocking the lever B in thedirection of the arrow I, Fig. l., the washer will be pushed to theinterior of the plunger A' and upon the work. The parts being in thisposition the treadle is operated to i'orce the puncturing-tool throughthe material, and after the puncturing the anvil and puncturing-toolreturn downward to the position shown in Fig. 1. The angle-lever D3 isnow released, which allows the finger D' to move `inward to force therivet into position, and at the same time the stop-pin D is pushed intoposition. The anvil is then pushed upward to force the shank of therivet through the perforation in the material ?j and through the washer.Next the levers l B are moved in the direction of the arrow 2, Fig. I,which will allow the plunger A2 to descend under the influence of thespringer2 to bear upon the washer. By a continued movement of the leverB in the direction of the arrow 2, its cam-shaped end will force theriveting-plunger down upon and upset the end of the rivet, as indicatedin Fig. 4.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. In a riveting machine, the combination with ariveting plunger, of a vertically movable tubular anvil, a pun cturingtool movable longitudinally thereimmeChanism for moving the toolindependently of the anvil,and means comprising a pin movable betweenthe lower portion of the puncturing tool and the part for moving theanvil for causing the said puncturing tool and anvil to move together,sub stantially as specified.

2. In a riveting machine, the combination with a riveting plunger, and aframe having a tubular portion in line with the plunger, ol' a tubularanvil movable vertically in said tubular portion, a puncturing tool insaid anvil and movable relatively thereof and also movable therewith, arivet tray communicating with the tubular portion of the frame, a pusherfinger extended into the tray, and a stop carried by the finger forconnecting the anvil and puncturing tool, substantially as specified.

3. The combination with the anvil, mechanism ior operating the same, andthe rivet tray, of the yoke having its arms extended through openings inthe base of the machine, the springs surrounding the arms,the rivetpusher finger rigidly connected thereto, and a cam lever for drawing theyoke outward, substantially as specilied.

4t. The combination with a tubular anvil, a puncturing tool movable withand also independently of the anvil, and a rivet tray, of thespring-impelled yoke, the pusher iingcr connected thereto, the cam leverpivotally IOO IIO

IIS

connected to the yoke, and the stop pin 'carried by the pusher forengaging the anvil with the puncturing tool, substantially as specied.

5. The combination with a riveting plunger, of the vertically movabletubular anvil, a rock arm, a link having a pivotal connection with therock arm and a pivotal lost motion connection with the anvil, thepuncturing tool in the anvil and carried by the pivot connecting thelink and anvil, and a stop pin movable between the link and puncturingtool for causing a connected movement of the puncturing tool and anvil,substantially as specied.

6. In a riveting machine, the combination with an anvil, of a verticallymovable presser plunger, a riveting plunger within the presser plunger,a pivoted lever for forcing the riveting plunger downward, a Washerchute mounted on and communicating with the interior of the presserplunger, a pusher operating in said chute, a lever fulcrumed on thepivots of the pivote-d lever, and link and lever connections between thesaid fulcrumed lever and the pusher in the chute, substantially asspecified.

7. In a riveting machine, the combination with an anvil, of a tubularpresser plunger, a washer chute carried thereby and communirivetingplunger within the presser plunger,

and a cam lever for forcing the riveting plunger downward, the said camlever also serving to operate the pusher in the washer chute,substantially as specified.

8. In a riveting machine, the combination with an anvil, of the tubularpresser plunger, a lever for lifting the plunger, a chute carried by andleading to the interior of the plunger, a pusher for operating therein,a spring iinger for holding a washer in place in the chute, awasher-holding plunger in the presser plunger, a riveting plunger intheholding plunger, a cam lever for operating the riveting plunger, anda lever operated by the cam lever and having connections for operatingthe washer pusher, substantially as speciiied.

CHRISTIAN A. SKEIE. NVitnesses:

ANDREW S. HALL, JAMES MOODY.

